OFFSET
1,2
LINKS
Harry J. Smith, Table of n, a(n) for n = 1..1000
PROG
(PARI) pi(x, c=0) = forprime(p=2, x, c++); c for(n=1, 2000, if(issquare(pi(n)), print1(n, " ")))
(PARI) { n=0; for (m=1, 10^9, if (issquare(primepi(m)), write("b064517.txt", n++, " ", m); if (n==1000, break)) ) } \\ Harry J. Smith, Sep 17 2009
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Oct 07 2001
STATUS
approved